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From The Collaborative International Dictionary of English v.0.48:
Greatly \Great"ly\, adv. 1. In a great degree; much. [1913 Webster] I will greatly multiply thy sorrow. --Gen. iii. 16. [1913 Webster] 2. Nobly; illustriously; magnanimously. [1913 Webster] By a high fate thou greatly didst expire. --Dryden. [1913 Webster]